Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> 700d78ca173a355e8b357c496fc3873e13cb3304d8968b92cf325f2850a28f84:16:8
   |
16 |         let total: UFix64 = SwapConfig.ScaledUInt256ToUFix64(res) - 0.2
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^